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VOLUME 33 (1981) | ISSUE 4 | PAGE 239
Investigation of the transition electromagnetic form factor in the ω→π0μ+μ- decay
Sixty events of the rare electromagnetic decay ω^π°μ+μ ~ were recorded. The relative probability of this decay BR Χ (ω->π0μ+μ-) = (9.6±2.3) Χ 10"5 is determined. The spectrum of the effective masses of muon pairs was measured and the electromagnetic transition form factor of the ωπ° vertex was determined F«> [™2μμΆ) = (l-m^/Л2)-1, where Λ 0.65±0.03 GeV/c2. A comparison with the vector-dominance model is made.